Scientists used DNA testing on 1,200-year-old feces to detect E. coli, pinworms, and Giardia in ancient Mexico, and found ...
In their new study an international team led by the University of Vienna reports the discovery and extraction of ancient DNA ...
DNA shines a light back into the past, showing us things that fossils can't. But how far back can that light extend? Some of the oldest DNA sequences come from mastodon and polar bear fossils about 50 ...
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